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A Study on the NKPA's Operational Art and Combat Execution during the Initial Phase of the Korean War

  • military history
  • 2026, (140), pp.47~84
  • Publisher : Military History Institute, MND
  • Research Area : Humanities > History
  • Received : June 26, 2026
  • Accepted : September 9, 2026
  • Published : September 15, 2026

장성진 1

1국방부

Accredited

ABSTRACT

The purpose of this study is to understand the operational art and combat execution of the North Korean People’s Army (NKPA) during the initial phase of the Korean War. To achieve this, the study examines Stalin’s war plan and Vasilyev’s campaign plan, while analyzing the underlying Soviet theories of operational art, as well as the lessons learned from Soviet experiences in World War Ⅱ. Stalin initially opposed the war due to concerns over a protracted war of attrition in the event of U.S. intervention and issues regarding the permanent operating factors. However, considering the possibility of China’s intervention on the Korean Peninsula, he approved a three-stage war plan. Stalin prioritized political justification over surprise, envisioned a protracted war of attrition involving Chinese forces, and explicitly limited direct Soviet military intervention. Vasilyev’s campaign plan placed the highest priority on the first stage: neutralizing the main forces of the South Korean military north of Suwon through simultaneous multi-front pressure and flanking envelopment maneuvers. The second stage envisioned deep maneuver warfare led by mechanized units, followed by the mopping up of remnants in the third stage. However, the plan overlooked logistics and troop replenishment issues. The NKPA’s defeat in the decisive early battles of the first stage was the product of their operational immaturity and the leadership’s fear and confusion regarding potential defeat. This was further compounded by the tactical incompetence and errors of certain divisions. Notably, the operational halt in Seoul was not caused by the need for operational preparations (such as engineering equipment readiness or rest) or expectations of a popular uprising. Rather, it stemmed from the fear and confusion triggered by the rapid intervention of U.S. forces, combined with Kim Il-sung’s operational immaturity. Although the confusion within the North Korean leadership was temporarily stabilized by Stalin’s orders and the operational art framework was reorganized with the support of Soviet advisors, The NKPA ultimately lost its operational momentum. The loss of air superiority hindered deep maneuver warfare, and severe limitations in wartime sustainability and troop replenishment hampered its capabilities. The primary obstacles were Stalin’s restrictions on deploying Soviet airpower and the limited role permitted to Soviet military advisors. By around August 20, prior to the September Offensive, the NKPA had reached its operational culminating point. However, prompted by a reassuring letter from Stalin on August 28, they continued their offensive, failing to accurately judge the critical turning point for strategic withdrawal or defense. Furthermore, their failure to comply with the order to assemble for the defense of Seoul ultimately exacerbated the catastrophic losses of the North Korean forces.

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